awww! I'm sorry...I have a dreadful lack of confidence in my pop culture knowledge, so my tentative guess was more a reflection of that than your drawing skills. I would like to draw your attention to my comment on his attitude though, which may be more important and difficult to capture...I still really like it

This is really amazing! There is nothing wrong with sketching off of photos as long as there is no copyright (if there is, just make sure you mention it). They say that sketching off of realism (photos, models, etc...) is a good way of practicing anatomy. So long as you aren't tracing off of the photo, It's nothing but a learning experience!